Mouthpiece for transmitters



May 7, 1929.

E. E. SLICK MOUTHPIECE FOR TRANSMITTERS Filed May 28, 1927 NVENTO VQWML Patented May 7, 1929.

UNITED STATES EDWIN E. SLICK, OF PITTSBURGH, PENNSYLVANIA.

MOUTHEIEGE FOR TRANSMITTERS.

Application filed May 28,

The present invention has for one of its objects, the provision of an improved mouth piece particularly adapted for use with telephones and possessing greater durability and more pleasing appearance than mouth pieces as now constructed and capable of being cleansed as desired for sanitation purposes.

At the present time, it is customary to con struct mouth pieces of the general nature herein contemplated, oi molded material such, for example, as gutta percha or the like. Such mouth pieces provide an abrupt change of section adjacent the threaded end, and not infrequently they are broken during ordinary handling of the phone. Also, due to the ease with which the threads on mouth pieces so formed are broken, mutilated or stripped, they are not adapted to withstand rough usage, nor are they capable of frequent removal and cleansing as may be desirable from a standpoint of sanitation.

In accordance with the present invention, I provide a mouth piece of glass having a reentorced terminal portion, the reeniorcement preferably being such that it constitutes a threaded male member for engagement with the transmitter.

In the accompanying drawings, I have shown for purposes of illustration only, one preferred embodiment of the present invention, it being understood that the drawings do not define the limits of my invention inasmuch as changes may be made in the material of which the transmitter is constructed as well as in the contour and arrangement thereof without departing from the spirit of the present invention or the scope of my broader claims.

In the drawings,

Figure 1 is a vertical sectional View through one form of mouth piece embodying the present invention;

Figure 2 is a bottom plan View of a mouth piece constructed in accordance with the pres ent invention; and,

Figure 3 is a side elevation of a completed mouth piece.

In carrying out the present invention, there may be provided a mouth piece comprising a main body portion 2 or a moldable material such, for example, as glass. Glass is chosen by reason of the fact that it may be subjected to repeated cleansing operations and for the further reason that it presents an attractive appearance.

lluring the molding of the mouth piece, there is incorporated therewith reentorcing 1927. Serial No. 194,921.

means preferably in the form of a sleeve 3 continuously threaded throughout its length.

This sleeve serves as a rcentorcement forthe mouth piece adjacent the end which engages the transmitter, and which end is usually weakened to a considerable degree by reason of the abrupt change of section necessary to accommodate the threads by means of which engagement is made with the transmitter. By reason of a sleeve threaded throughout its length, the threads 011 the upper portion thereof serve to embed the sleeve in the glass body and prevent displacement or relative movement between the parts.

1 l urthermorc, the provision of a threaded SiGCVG provides a constructlon which is symmetrical with respect to its opposite end portions, thereby preventing possibility of error 111 posi 'oning the sleeve within the mold.

desired, the mold may be so shaped as to provide a projecting annular portion lof glass adapted to lie within the sleeve and co1npletely cover the internal surface thereof.

The sleeve being oi": metal, affords adequate reenttorcement for the mouth piece body, and at the same time provides a substantially in destructible thread enabling the mouth piece to be repeatedly removed from and applied to a transmitter without destruction of such threads. lhis constitutes one of the advantages of the present invention.

A further advantage of the invention arises from the provision of a mouth piece having reenforcing means provided therefor adjacent the abrupt change of section in the mouth piece.

Still further advantages arise from the provision of a mouth piece having incorporated therein a recnforcing sleeve preferably threaded throughout its entire length to provide end portions of similar characteristics.

I claim:

1. As an article of manufacture, amolded mouth piece for transmitters having an abrupt change of section in one portion thereof and re-entorcing means embedded in the mouth piece beyond the change of section and removed from the inner surface of the mouth piece, whereby the interior of the mouth piece presents a continuous surface of molded material. from end to end.

2. As an article of manufacture, a molded mouth piece for transmitters having an abrupt change of section, and re-entorcin the exterior of the month they-grill t l .rUOu-J;

prising a body portion of frangible material having a portion of abrupt change of shape at one end and re-enforcing means disposed exteriorly of the frangible material which forms a lining therefor throughout its entire length, and having means for engaging a supporting member.

In testimony whereof I have hereunto set my hand.

EDWVIN E. SLICK. 

